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Technical Specification
PRODUCT NUMBER 0393327769RRCW13RRCW10RRCW17RRCW19
Length 175mm160mm225mm245mm
Length (mm) 1313101719

Q 1. What does the HI-TORQ® ring end design do differently from a standard ring spanner?

A. The 12-point HI-TORQ® ring ends grip the flats of the fastener rather than its corners. This spreads the load across the flats, transmits more torque to the nut or bolt, and helps prevent corner damage — a particular advantage on worn or frequently tightened fasteners.

Q 2. How fine is the ratchet action on the Draper 3942 spanner?

A. The spanner uses a 100-tooth ratchet mechanism, which provides 3.6° of movement per stroke. This fine arc makes it practical in confined spaces where swing clearance is very limited.

Q 3. Why would I choose an S-shape spanner over a standard double ring spanner?

A. The S-shape profile allows the spanner to reach around obstacles and fit into spaces where a straight or standard-offset spanner would not have clearance. Combined with the ratchet action, it is designed specifically for restricted-access fastening.

Q 4. What material and finish does the Draper Expert 3942 spanner use?

A. It is manufactured from hardened and tempered chrome vanadium steel, with a mirror chrome plate finish applied for corrosion protection.

Q 5. Is the Draper 3942 available as part of a set?

A. Yes. In addition to this individual 10 x 12mm spanner, the HI-TORQ® S-shape double ring ratchet range is available as a five-piece set supplied in a wallet and roll.

Q 6. Can I ask questions about this product before ordering?

A. Yes — WhatsApp us on 07754 288583 with any questions about specifications, suitability, or compatibility, and we'll help you choose the right product.

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